in all the 63 to 66 fuse boxes the have one marked for cig lighter. so i would go off that and use the correct gauge fuse. as far as the radio is concerned, can you go off your radio block on the fuse box as well? i like to try to keep things the same if i can. did you get a lighter with the orig wire attached? might ned to research what gauge wire to use for the lighter if you didn't, i know the fuse is a higher one. good luck
